LEASES (Tables)

9 Months Ended

Sep. 30, 2020

A schedule of lease costs and other lease information follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Lease cost:
Amortization of right-of-use assets	$	1,025	$	593	$	2,616	$	1,505
Interest expense	327		213		863		555
Fixed lease cost - vehicles, equipment and property	2,048		2,351		6,636		7,271
Fixed lease cost - landfill operating leases	2,243		1,957		5,711		5,580
Fixed lease cost	4,291		4,308		12,347		12,851
Short-term lease cost	856		853		2,514		2,261
Variable lease cost	141		329		402		712
Total lease cost	$	6,640	$	6,296	$	18,742	$	17,884

Other information:
Cash paid for amounts included in the measurement of lease liabilities:
Financing cash flows for finance leases	$	1,304	$	666	$	3,246	$	1,870
Operating cash flows for operating leases	$	3,874	$	2,963	$	9,588	$	9,837
Right-of-use assets obtained in exchange for new finance lease liabilities	$	5,078	$	—	$	16,871	$	6,857
Right-of-use assets obtained in exchange for new operating lease liabilities	$	147	$	831	$	3,289	$	1,419

							September 30, 2020
Weighted-average remaining lease term - finance leases (years)							5.9
Weighted-average remaining lease term - operating leases (years)							11.7
Weighted-average discount rate - finance leases							4.3		%
Weighted-average discount rate - operating leases							5.1		%

Estimated minimum future lease obligations are as follows:

Estimated minimum future lease obligations are as follows: